# 选择结构
# tom = 500
# if tom > 300:
#     print("Tom真有钱")
#

#while 循环
# i = 1
# sum = 0
# while i <= 100:
#    sum+=i
#    i+=1
# print(sum)

# while True:
#     context=input("输入你想要输入的内容:")
#     if(context == "exit"):
#         break
#     print(context)

#for循环
# string ="走出至暗时刻"
# for i in string:
#     print(i)

# num=10
# for i in range(num):
#     print(i)
#

# for i in range(1, 11):
#     print(i)


for i in range(1,10,2):
    print(i)